.topicdetail {
  padding-bottom: 150px;
  .list {
    width: 690px;
    height: auto;
    margin: 0 30px;
    .title {
      text-align: center;
      background: #f4f4f4;
      font-size: 30px;
      color: #999;
      padding: 30px 0;
    }
    .item {
      width: 100%;
      padding: 24px 24px 30px 24px;
      margin-bottom: 30px;
      background: #fff;
      box-sizing: border-box;
      .img {
        height: 278px;
        width: 642px;
        display: block;
      }
      p {
        display: block;
        margin-top: 30px;
        font-size: 28px;
      }
    }
  }
}
